All right. Here it is.
My plant is not sticky (at 5:00 in the evening) anywhere but inside the (still) closed petals. I watched a bee fight to free itself while I was testing the plant!
Cool!
I tested stem hairs and leaves, and I even pulled a piece of leaf stalk off and squished it in my fingers. No stickiness until I pressed the opening of the petal grouping.
So...I'll enter it as latifolia ssp. alba, right?
Thanks, again.